People get made at VIZ Media like any company, but some things they're pretty notorious for.
1. Showing too much love for Naruto, one of their best-selling series. They always go "Your favorite ninja's birthday is..." and don't do anything similar for any other series.
2. Failing to reprint certain manga volumes. For example, the 6 volume manga Pretty Face, only volumes 1, 2, and 6 are in print. 3, 4, and 5 are out of print, and go for high prices on Amazon, like $70 and it makes you go "WTF?". Luckily it's not Tokyopop bad.
3. Failing to complete certain anime series. There are so many series they NEVER finished on DVD, or in any way. MAR, they dubbed 52/102 episodes, and never got more. Full Moon, they released about 28 episodes on DVD and stopped. Blue Dragon, that got 12 edited episodes out of 51 total on DVD. MAR, they cancelled volume 5 (Episodes 17-20) in favor of other series. I could go on and on with this. This is what they're most notorious for.